# Samsung Electro-Mechanics forms glass substrate JV with Dongwoo Fine-Chem

Samsung Electro-Mechanics signed a definitive agreement to establish a joint venture with Dongwoo Fine-Chem (Sumitomo Chemical Group subsidiary) to manufacture glass cores for semiconductor glass substrates. Samsung will hold 66.2% and invest 319.1 billion won. The JV will be based at Dongwoo's plant in Pyeongtaek and begin operations in H2 2027.

- Type: Acquisition
- Announced: 2026-07-02
- Where: Pyeongtaek, Gyeonggi Province, South Korea
- Value: $370.0M (480.0B KRW)
- Status: announced
- Products: glass cores for semiconductor glass substrates
- Sectors: [Semiconductors and Industrial Electronics](https://endata.com/sectors/semiconductors-electronics.md)

## Companies

- [Samsung Electro-Mechanics](https://endata.com/companies/15109.md) (acquirer)
- [Sumitomo Chemical](https://endata.com/companies/20503.md) (partner)
- [Dongwoo Fine-Chem](https://endata.com/companies/50120.md) (partner)

## Sources

- [thelec.net](https://www.thelec.net/news/articleView.html?idxno=11916), 2026-07-02: "Samsung Electro-Mechanics has signed a definitive agreement with Dongwoo Fine-Chem... to establish a joint venture for glass substrate materials."

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Data from Endata (https://endata.com/). Announcements are summarized from public sources and may be incomplete; check the linked originals.